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L. H. MARTIN. KEROSENE VAPORIZEHFOR INLERNA'L comausnou ENGINES.

APPLICATION FILED OCT- U. 19H- Patented Oct. 28, 1919.

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Taall whom it may concern:

Be it known that I, LEWIS H. Mnn'rni, a

citizen of the United States, residing at Indianapolis, Marion county, and State of Indiana, have invented and discovered certain new and useful Improvements in Kerosene Vaporizers for Internal Qombustion Engines, of which the following a specification.

My invention relates to kerosene vaporizin means for internal combustion engines, an its object -is to provide means whereby the kerosene maybe eflectively vaporized prior to the starting of the engine, and whereb after the engine has started such initial eatin means are automatically cut oil and the eat for efiecting Va orization of the fuel is derived from the ex aust ases of the engine- With t is object in view, my invention is embodied in preferable form in the construc- I tion andaifrangement hereinafter described and illustrated. in the accompanying drawiii these drawings, Figure 1 is a longitudinal side elevation, partly in vertical section,

of a art of an internal combustion engine I with uel connections and with my improvements applied thereto; and Fig. 2'an enlarged detail side elevation partly in section of the automatic thermostatic controller ele' ment for the two sources of heat.

Referring to the drawings, 1 indicates an internal combustion engine and 2 a fuel tank adapted to receive kerosene. Leading from this tank is a fuel conducting pipe 3 which connects with or has formed as part thereof a=worm or coil 4 located in a suitable casing i fiend adapted to be surrounded by a coil of i continued by means of an extension 9 into a junction and valve casing 10 from which a branch pipe 11 leads down to a main carbureter' sup y conduit 12 which may be pro-' vided with a suitable check valve 13. v

,Between the electrically heated chamber 5 and the fuel tank there is connected'to the 'main pipe 3, a branch pipe 14 which is also connected to or has formed as part thereof aworm or coil 15 locatedin a casing 16 constituting a heating chamber. Said chamber is adapted to receii e at each end the two sections 17 and -18| of an exhaust pipe adapted to convey the hot exhaust Sp eciflcatioh of Letters Patent.

Application filed. October 8, '1917. Serial No. 195,411.

the further Patented Oct. 28, 1919.

gases from the exhaust manifold of the engine to the chamber so as to thereby heat the worm or coil 15. This worm 1s con- Between the junction of the pipe 14 with i the main pipe 3, and .theheatingjchamber 5,

.is located a check valve 22 adapted to prevent the return flow of the kerosene from the worm in the electrically heated chamber and a similar check valve 23 is mounted in the pipe .14.

To control the supply of heat from either one of the two sources, namely, the battery and the exhaust man fold, a thermostatic controller is provided which comprises a reciprocable valve rod 24 carrying at end a valve 25 which is adapted to close the entrance to the valve casing 10 or open the same, and carryingat its end a similar valve 26 adapted to control communication from the pipe 19 to the carburetor sup-plying pipe 12, an are so arranged that when one valve is closed the lower one will be open and vice versa.

The valve rod is ada ted to be operated by a lever 27 fulcrume at its inner end to a suitable part of the frame and having ivotally connected thereto'an arm 28 whici is connected to the active element of a thermostat 29. This thermostat is mounted adjacentto the exhaust conveying pipe 17 and communicates with the exhaust heated chamber 16 through the opening 29' and is 0 erable by variations in the temperature 0 the gases assing through said chamber.

In t e operation of the device, when the it will be seen that these valves engine is started by suitable mechanism, the

kerosene which is under pressure in the tank 2, is admitted to the ipe 3 and thence flows to the'worm t and t ereupon the switch 30 bein closed, an electric circuit will be estab'hshed through the heatin coil 6 surrounding the worm,

part sufficient heat to the worm as to vaporize the kerosene passing -therethrough, whereby the engine will be supplied with kerosene vapor for the initial rufnnin of the same. This vapor will be conducted through the pi es 9 and 12 to the carbureter. When t e engine'hasbecome fully started and the exhaust gases have raised the'temperature of the pipe 17 and chamber from t e battery 7 which coil will be sufliciently heated to im-' broken at the switch contacts 3 16 to a predetermined degree, the heat from said chamber will cause the expanding element of the thermostat 29 to be raised, thus moving the lever 27-and carrying upward thevalve rod 24 so as to seat the valve 25 and cut oil communication between the pipe 9 and the pipe 12, thus preventin r the How of kerosene through the electrica y heated worm 4. At the same time the circuit through the electrical heating coil 6 will be b the upward movement of the lever 27. 'i'he kerosome will then flow from the. pipe 13 through the branch pipe 14 and into the worm 15 in the gas heated chamber 16 and will be sufiiciently heated by the hot exhaust gases to vaporize the kerosene in the worm, and the resulting vapor will be led through the pipe 19 into the carburetor.

Having thus described my invention, what I claim is:

1. The combination with an internal combustion engine, a source of liquid hydrocarbon, a casing located intermediate saidliquid source and the engine and providing independentchambers, a fuel passage pipe in each of said chambers and communicating respectively with said liquid Source and the engine, a. common contr'ollingmeans for the fuel passing through said fuel passage pipes, an electric heating coil forinitially vaporizing the fuel passing through the fuel ipe in one of said chambers, means for con acting the engine exhaust gases to heat the fuel pipe in the other of said chambers, and means operable by the engine exhaust gases to break the circuit through .the electrically heated coil and ac late said controllin means to stop the flow of fuel heated t ereby and open the fuel supply from thepipe in the ex haust gas heated chamber, substantially as set forth.

2. The combination with an internal combustion engine, a source of liquid hydrocarbon, a casing located intermediate said liquid source and the engine and provided with independent chambers, a spiral pipe for fuel passage through each of said chamhers and communicating respectively with said liquid source and the engine, valves for controlling the passage of fuel through said )ipes respectively, an electric heating coil or initially vaporizing the fuel passin throu h the fuel fpipe coil in one of said cha n ers, means or conducting the engine exhaust gases to heat the fuel pipe coil in the other of said chambers, and means operable by the engine exhaust gases to break the circuit through the electrically heated coil and actuate said valves to stop the flow of fuel passing thcrethrough and open the fuel supply from the ipe coil in the exhaust gas heated chaniiier, substantially as set forth.

3. In combination with an internal combustion engine, a source of liquid hydrocarbon, a fuel feeding pipe having parallel branched passages connecting the fuel source and the engine, means for heating one of said pipe branches by the exhaust gases from the engine to normally vaporize the fuel, means independent of the engine for heatin the other of said pipe branches to inititilly vaporize the fuel, valves controlling the passage of fuel through said branch pipes respectively, a rod connecting said valves, a fulcrumed lever connected to actuate said rod and open and close said'valves alternately, a thermostatic control for said lever operable by the exhaust gases of the engine, and means actuated by the thermostat c'ontrolled lever for controlling said independent fuel heatin means, substantially as set forth.

In witness whereof, I have hereunto set m hand and seal at Indianapolis, Indiana, this 3d day of October, A. D. nineteen hundred and seventeen.

LEWIS H. MARTIN. [L. s]

Witnesses:

H. P. Doom'rrns, MLL. Snows. 

